@mixin flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}
@mixin flex-justify-center {
  display: flex;
  justify-content: center;
}
@mixin flex-align-center {
  display: flex;
  align-items: center;
}

@mixin fill-center {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

@mixin box-shadow {
  box-shadow: 0 2px 12px 0 rgba(0,0,0,0.1)
}